When designing your own home—more specifically your own “hers” bath suite—it helps to have a design-minded builder for a husband. Such was the case for Old Greenwich’s Elizabeth Needham who is married to Peter Mark, founder of Coastal Properties, LLC.

As with the layout for the rest of the house, Elizabeth chose to showcase the views of the watery cove on Long Island Sound on which the home sits. With floor-to-ceiling windows that admit abundant natural light and pale floors finished in large slabs of linen marble, the space has a decidedly serene, spa-like ambience.

“I wanted what’s outside to be the biggest influence,” says Elizabeth, who adds that her bathroom turned out better than she could have imagined, a fact that she credits entirely to her husband.

The couple hired Christopher Peacock Cabinetry to build the custom vanity, an elongated piece with a single sink, made of wood and painted white with a stone top. It is open at the bottom and features a dark teak shelf, which provides supplemental storage.

“We didn’t want anything heavy that would extend to the floor and appear monolithic,” Elizabeth explains.

Like the open vanity, the shower enclosure is light and airy with unobstructed views, custom-made with glass walls and tucked into a corner. It is fitted with hand, body and overhead sprays from Waterworks, as well as a thermostatic valve, which Elizabeth enjoys because of the consistent water temperature it provides. Peter Cieciwa Tile & Marble installed the tile, including white-and-tan river stone in the shower and a subtle border of white, brown and gray stones around the perimeter of the room.

To take the chill out of cold winter mornings, the couple installed a Dacor towel warmer in a drawer beside the shower. They also chose Toto’s Neorest toilet, which features integrated toilet-bidet functionality and a built-in seat warmer.

The main attraction in the room, however, is the freestanding Waterworks .25 tub, which resembles a large egg sliced in half. Designed by Shelton Mindel & Associates exclusively for the Danbury-based bath products manufacturer, it was dubbed “a womb with a view” by designer-architect Lee Mindel. Although Elizabeth has yet to use it herself, her children have managed to splash around on occasion.

Once the kids are off to school each morning, though, she says she does spend more time in her spacious suite, which is also wired for sound.

“It’s a private haven,” she says, adding that it achieves its intended utilitarian purpose as well.

When asked whether he lavished the same designer’s touch on his own bathroom, husband Peter replied, “My bathroom is not nearly as glam.”